Stand-lamp construction



Feb. 28, 1928. 1,660,317

R. B. BENJAMIN sum) LAMP CONSTRUCTION Filed June 5. 1924 2 sheets-Sheet1 I flaw/@015 GQAW@.@IIW I 99m W10, am /ww Feb. 28, 1928.

R. B. BENJAMIN STAND LAMP CONSTRUCTION Filed June 5. 1924 2 Sheets-5mm 2Patented Feb. 28, 1928.

UNITED STATES 3,660,317 optics.

REUBEN B. BENJAMIN, or CHICAGO, ILLINOIS, .ASSIGNOR T BENJAMIN ELECTRICMANUFACTURING COMPANY, OF CHICAGO, ILLINoIs, A CoiaPonATIoN or ILLINOIS.

STAND-LAMP CONSTRUCTION.

Application filed June 5, 1824. Serial No. 718,044.

My invention relates to stand lamp constructions and more specificallyto a stand lamp cluster provided with switches.

One of the objects of my invention is to provide a stand lampconstruction which will be simple, durable and efficient.

A further object of my invention isto provide improved supporting meansfor the lamp contacts, switches and housing.

Further objects will appear from the description and claim.

In the drawings, in which an embodiment of my invention is shown F igure1 is an axial section of the stand lamp;

Fig. 2 is a top View of the stand lamp, parts being removed to show theinterior construction Fig. 3 is a section on the line 33 of Fig. 2; i

Fig. 4 is a section on the line 44 of Fig. 2;

Fig. 5 is a section on the line 55 of Fig. 2; and

Fig. 6 is an unassembled view of the commutator and ratchet.

Referring to the drawings in detail, the construction shown comprises atubular pedestal 10 which may be of metal tubing affording a passage forthe feed wires to the lamp, an insulating base 11 which may be ofporcelain or other suitable material, shell and center receptaclecontacts 12 and 13 mounted on the insulating base 11, apair of alinedswitch mechanisms 14 for controlling the two lamps, also mounted on theinsulating base, a sheet metal housing 15 for enclosing the base,contacts, switch and a shade-supporting frame 16 supported above thehousing 15. For mounting the insulating base 11 on the tubular pedestal10, a V-shaped metal bracketl'? is provided, the central portion 18 ofwhich is riveted to a bushing 19 screwed into the end of the pedestal 10and the arm portions 20 of which are clamped against the underside ofthe insulating base 11. For supporting the upper part of the housing 15and the shade-sup'- porting frame 16, another V-shaped metal bracket 21is provided, the arms 22 of which areclamped against the upper side ofthe insulating base 11. A screw 23 is riveted to the central portion ofthis upper bracket, the upper part of the casing and the shade-suplowerface, respectively,

and center contact in members by means of a metal mechanisms, etc.,-

porting member 16 being clamped on the upper bracket by means of a nut24 threaded onto the screw 23. For clamping the upper and lower bracketsagainst the upper and of the insulating base, a pair of screws 25 areprovided ex tending through registering holes in the bracket andinsulating base and provided with clamping nuts 26. The feed wire forboth of'the threaded shell contacts 12 is secured to a binding screw 27threaded into a 'metal stamping 28 to which both of the threaded shellcontacts are mechanically and electrically connected by means of screws29.

Each of the switch mechanisms comprises a spring contact 30,electrically connected with the other binding screw 31, a commu-v tator32 for making and breaking connection with, respect to the contact 30, aratchet andchain mechanism 33* for operating the com mutator 32 and aswitch frame member 34 in which the commutator 32 is rotatably mounted.This switch frame member 34 is electrically connected with the centercontact 13 by means of a rivet member 35 which also serves to hold theswitch frame member place on the insulating base. The binding screw 31is electrically connected with both of the spring contact stamping 36into which the binding screw 31 is threaded. The spring contact members30 and the metal stamping 36, are held in place on the insulating base11 by means of a pair of screws 37 which extend through registeringholes in the insulating base and spring contacts and are threaded. intothe metal stamping.

For holding the con'unutators 32 in alinement and supporting the ratchetmembers 38 for oscillating movement, a common switch shaft 39 provided,the ends of which are seated in recesses in the commutators and thecentral portion of which serves as a support for the ratchet members.

For returning the ratchet member 38 when thus actuated by means of thepull chain 40, a common return spring 41 is provided in the form of atorsion spring, the ends of which are secured to the ratchet membersrespectively. As the pull chains operate to oscillate the ratchetmembers in opposite directions, respectively, this common return.

spring will serve for both ratchet members.

Fig. 6 shows details of the commutator and ratchet member. Thecommutator is provided with ratchet recesses 42 for cooperation with theratchet tooth 43 on the ratchet member 38. This ratchet member may be asheet metal stamping having a chain-securing lu 4A to which the end ofthe chain 40 is D a u a secured and a chain rail portion 45 over whichthe chain runs.

The circuit is from the binding screw 31 through the metal conductor 36,spring 30,

commutator 32, switch frame 3 1 and rivet 35 Having thus described myinvention, what I claim as new and desire to secure by Letters Patent ofthe United States is A switch receptacle construction comprising aninsulating base, a pair of electrical receptacle devices mountedthereon, and a pair of switchmechanismsmounted on said base forcontrolling said receptacle respectively, said pair of switch mechanismscomprising a pair of coaxial independently rotatable commutators, ashaft coaxial with said coinmutators and extending therebetween, and apair of ratchet devices intermediate said commutators for impartingstep-by-step movement to said commutators, respectively, independentlyoscillatable on said shaft.

In witness whereof, I have hereunto subscribed my name.

REUBEN B. BENJAMIN.

